DE3521477C2 - - Google Patents

Info

Publication number
DE3521477C2
DE3521477C2 DE3521477A DE3521477A DE3521477C2 DE 3521477 C2 DE3521477 C2 DE 3521477C2 DE 3521477 A DE3521477 A DE 3521477A DE 3521477 A DE3521477 A DE 3521477A DE 3521477 C2 DE3521477 C2 DE 3521477C2
Authority
DE
Germany
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE3521477A
Other languages
German (de)
Other versions
DE3521477A1 (en
Inventor
Kazuo Hachiohji Tokio/Tokyo Jp Kajitani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Publication of DE3521477A1 publication Critical patent/DE3521477A1/en
Application granted granted Critical
Publication of DE3521477C2 publication Critical patent/DE3521477C2/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
DE3521477A 1984-06-15 1985-06-14 Expired DE3521477C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59121840A JPS612117A (en) 1984-06-15 1984-06-15 Lens for optical disc

Publications (2)

Publication Number Publication Date
DE3521477A1 DE3521477A1 (en) 1985-12-19
DE3521477C2 true DE3521477C2 (en) 1987-05-07

Family

ID=14821231

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3521477A Expired DE3521477C2 (en) 1984-06-15 1985-06-14

Country Status (3)

Country Link
US (1) US4655556A (en)
JP (1) JPS612117A (en)
DE (1) DE3521477C2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600276A (en) * 1984-09-04 1986-07-15 Eastman Kodak Company Optical disc player lens
JPH0638130B2 (en) * 1985-04-18 1994-05-18 オリンパス光学工業株式会社 Gradient index lens
US4765723A (en) * 1985-11-05 1988-08-23 Minolta Camera Kabushiki Kaisha Objective lens system for optical reading device
JPS62194212A (en) * 1986-02-20 1987-08-26 Pioneer Electronic Corp Objective for optical information reader
US4826299A (en) * 1987-01-30 1989-05-02 Canadian Patents And Development Limited Linear deiverging lens
US4927247A (en) * 1988-05-13 1990-05-22 Matsushita Electric Industrial Co., Ltd. Objective lens for optical disk system and optical head using the same
JP2635724B2 (en) * 1988-10-31 1997-07-30 ジューキ株式会社 Abnormal detection device of the detection device of the staggered sewing machine
JPH02150816A (en) * 1988-12-01 1990-06-11 Canon Inc Aspherical single lens
JP2739651B2 (en) * 1989-03-10 1998-04-15 ホーヤ株式会社 Glass molded aspheric single lens
US5293269A (en) * 1991-05-03 1994-03-08 Mcdonnell Douglas Corporation Aspheric cylindrical lens and method of fabrication
JP2003337281A (en) * 2002-05-17 2003-11-28 Minolta Co Ltd Objective lens for optical pickup

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0442650B2 (en) 1980-10-31 1992-07-14 Konishiroku Photo Ind
NL8103323A (en) * 1981-07-13 1983-02-01 Philips Nv SINGLE LENS WITH A SPHERICAL AND ASPHERIC BREAKING SURFACE.
DE3138525C2 (en) * 1981-09-28 1987-11-12 Akzo Gmbh, 5600 Wuppertal, De
JPS5868711A (en) * 1981-10-20 1983-04-23 Matsushita Electric Ind Co Ltd Objective lens
JPS5926714A (en) * 1982-08-05 1984-02-13 Olympus Optical Co Ltd Lens for optical disc

Also Published As

Publication number Publication date
US4655556A (en) 1987-04-07
DE3521477A1 (en) 1985-12-19
JPS612117A (en) 1986-01-08

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: WEICKMANN, H., DIPL.-ING. FINCKE, K., DIPL.-PHYS. DR. WEICKMANN, F., DIPL.-ING. HUBER, B., DIPL.-CHEM. LISKA, H., DIPL.-ING. DR.-ING. PRECHTEL, J., DIPL.-PHYS. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee